In Chicago, Trump Hits Headwinds

``Many real-estate developers are under pressure these days as lenders and investors rush to cut their exposure to the market. But Mr. Trump's 92-story Trump International Hotel & Tower in Chicago, which will be the tallest building constructed in the U.S. since the Sears Tower opened in 1973, may be especially vulnerable because it's getting hit by a triple whammy of colliding forces: the credit crunch, the reversal in the housing market and weak retail sales.''